CN117388161B

CN117388161B - High-density circuit board detection device

Info

Publication number: CN117388161B
Application number: CN202311659925.2A
Authority: CN
Inventors: 高德敏
Original assignee: Shenzhen Grace Automation Co ltd
Current assignee: Shenzhen Grace Automation Co ltd
Priority date: 2023-12-06
Filing date: 2023-12-06
Publication date: 2024-03-01
Anticipated expiration: 2043-12-06
Also published as: CN117388161A

Abstract

The invention relates to a high-density circuit board detection device, and relates to the technical field of circuit board detection; including the fixed plate, the fixed mounting panel that is equipped with on the fixed plate installs the removal screw rod between two mounting panels, and fixedly connected with is first motor on the removal screw rod, and threaded connection has the screw thread seat on the removal screw rod, installs fixture and vibration mechanism on the screw thread seat, is equipped with the mount on the fixed plate, slidable mounting has brush material mechanism and drives the reciprocating mechanism of brush material mechanism reciprocating motion on the mount. The invention can solve the following problems in the process of detecting the circuit board in the prior art: firstly, when the circuit board is observed in the prior art, the circuit board is always in a static state, and whether the welding of parts on the circuit board is firm cannot be known; secondly, can't carry out the centre gripping to the circuit board of equidimension not only can lead to the circuit board to take place the displacement in test process thereby influence test result, also can lead to the suitability of device not strong.

Description

High-density circuit board detection device

Technical Field

The invention relates to the technical field of circuit board detection, in particular to a high-density circuit board detection device.

Background

The names of the circuit boards are: ceramic circuit boards, alumina ceramic circuit boards, aluminum nitride ceramic circuit boards, PCB boards, aluminum substrates, high frequency boards, thick copper plates, impedance boards, PCB, ultra-thin circuit boards, printed circuit boards, and the like. The circuit board enables the circuit to be miniaturized and visualized, and plays an important role in mass production of fixed circuits and optimization of the layout of electrical appliances.

The utility model discloses a circuit board high density blind hole 3D microscope detection device and detection method as in chinese patent of publication No. CN108254381a, the device comprises an operation table, the bottom mounting of operation table is equipped with the supporting leg, the middle part at operation table top is equipped with the standing groove, the top of standing groove is equipped with two first electronic slide rails, the top sliding connection of first electronic slide rail has first vice rail, the top of first vice rail is equipped with the second electronic slide rail, the top sliding connection of second electronic slide rail has the second vice rail, it is convenient for adjust the horizontal and the longitudinal position of placing the board through the first electronic slide rail and the second electronic slide rail that set up, be convenient for the 3D microscope to carry out the flat detection of sweeping to the surface of PCB board, and drive the lead screw through the rotation of the step motor output shaft that sets up and rotate, realize the reciprocates of 3D microscope rack through lead screw and lead screw nut threaded connection, and the guide post that sets up is convenient for provide direction and support effect to the reciprocates of 3D microscope rack.

However, the circuit board high-density blind hole 3D microscope detection device and the detection method have some defects in the actual use process:

1. firstly, in the prior art, the transverse and longitudinal positions of the placing plate are convenient to adjust through the arranged first electric sliding rail and the second electric sliding rail, however, when the circuit board is observed through a microscope, the circuit board is always in a static state, only the welding position of the part on the circuit board can be observed to be accurate, whether the part on the circuit board is firmly welded or not can not be known,

2. secondly, among the prior art, only place the circuit board that needs to test through placing the platform, can't fix the circuit board of equidimension not, can't carry out the centre gripping to the circuit board of equidimension not, thereby can not only lead to the circuit board to take place the displacement in test process and influence test result, also can lead to the suitability of device not strong.

Therefore, under the above stated point of view, the existing circuit board high density blind hole 3D microscope detection device has room for improvement.

Disclosure of Invention

In order to solve the problems, the invention provides a high-density circuit board detection device, which comprises a fixed plate, wherein the fixed plate is fixedly provided with a mounting plate, the mounting plate is symmetrically arranged along the length direction of the fixed plate, a movable screw is jointly rotatably arranged between the two mounting plates, the movable screw is fixedly connected with a first motor, the first motor is fixedly arranged on the mounting plate on one side through a motor seat, the movable screw is in threaded connection with a threaded seat, one end of the threaded seat is slidably arranged on the fixed plate, the threaded seat is rotatably provided with a connecting rod, the connecting rod is fixedly provided with a clamping mechanism and a vibration mechanism, one end of the fixed plate is provided with a brushing mechanism, one end of the fixed plate is fixedly provided with a fixing frame, the fixing frame is slidably provided with a brushing mechanism, and the fixing frame is also provided with a reciprocating mechanism for driving the brushing mechanism to reciprocate.

The clamping mechanism comprises a second motor, a fixed clamping plate, a movable clamping plate, a clamping slide rod, a -shaped clamping block and an adjusting part; the second motor is fixedly mounted on the threaded seat, an output shaft of the second motor is fixedly connected with the connecting rod, the fixed clamping plates are fixedly mounted on the connecting rod, the clamping slide rods are fixedly and symmetrically mounted on two sides of the -shaped clamping blocks, one clamping slide rod is far away from one end of the -shaped clamping blocks and is slidably connected with the fixed clamping plates, the other clamping slide rod is far away from one end of the -shaped clamping blocks and is slidably connected with the movable clamping plates, and through grooves for the sliding of the clamping slide rods are formed in the fixed clamping plates and the movable clamping plates.

And the movable clamping plate is provided with a test component for testing the circuit board.

Preferably, the adjusting part comprises a first threaded rod and a second threaded rod, the first threaded rod is rotatably mounted on the fixed clamping plate, the clamping slide rod is in threaded connection with the first threaded rod, the two second threaded rods are rotatably mounted on the fixed clamping plate and the two ends of the movable clamping plate, clamping synchronous wheels are fixedly mounted on the two second threaded rods, and clamping belts are sleeved on the clamping synchronous wheels jointly.

Preferably, the vibration mechanism comprises a first synchronous wheel, a vibration plate, a second synchronous wheel, a vibration belt, a vibration shaft and a vibration cam; the vibration device comprises a connecting rod, a vibration plate, a vibration shaft, a first synchronous wheel, a second synchronous wheel, a vibration cam and a vibration cam, wherein the first synchronous wheel is fixedly arranged on the connecting rod, the vibration plate is fixedly arranged on the connecting rod, the vibration shaft is rotationally arranged on the vibration plate, the second synchronous wheel is fixedly connected on the vibration shaft, and the vibration cam is fixedly arranged at one end, far away from the vibration plate, of the vibration shaft.

Preferably, the brushing mechanism comprises a -shaped fixing plate, a scraping brush plate, a telescopic spring rod and a scraping brush needle; shape fixed plate slides and locates on the mount, scrape the brush board parallel arrangement in shape fixed plate is inside, flexible spring rod fixed mounting is between scraping brush board and shape fixed plate, and flexible spring rod one end and scrape brush board fixed connection, the other end and shape fixed plate fixed connection, it is provided with the multiunit to scrape the brush needle equidistant on scraping the brush board.

Preferably, the reciprocating mechanism comprises a fixed cylinder, a rotating rod and a U-shaped frame; the utility model discloses a U-shaped rack, including fixed cylinder, U-shaped rack, fixed plate 100, U-shaped rack and pivoted frame, the dead lever is located inside the fixed cylinder and is installed on the mount in the rotation, the abnormal shape groove has been seted up on the dead lever, the U-shaped rack cover is in the dead lever outside, and the slider that extends to the abnormal shape inslot is all installed to the inside every curb plate of U-shaped rack, and U-shaped rack and shape fixed plate 100 fixed connection.

Preferably, one end of the rotating rod far away from the U-shaped frame and the output shaft of the first motor are fixedly provided with reciprocating synchronous wheels, and the two reciprocating synchronous wheels are sleeved with a reciprocating belt.

Preferably, the fixing frame is also provided with a testing mechanism capable of detecting the virtual soldering of the circuit board, and the testing mechanism comprises a -shaped fixing plate, a scraping brush plate, a telescopic spring rod, a scraping brush strip and a driving part; the scraping brush strips are arranged on the scraping brush plate in a sliding mode, a plurality of groups of scraping brush strips are arranged on the scraping brush plate, and the driving part drives the scraping brush strips to reciprocate to perform virtual welding detection on the circuit board.

Preferably, the driving part comprises a driving plate, a driving gear, a driving shaft and a driving rack; the drive plate is symmetrically and fixedly arranged at two ends of the scraping brush plate along the length direction of the -shaped fixing plate, a plurality of drive gears are rotatably arranged on the drive plate in a linear array mode, the drive shafts are rotatably arranged between the drive plates and fixedly connected with the drive gears, a plurality of drive grooves are formed in the drive shafts at equal intervals, the scraping brush strips are slidably connected in the drive grooves, and the scraping brush plate is provided with sliding grooves for the scraping brush strips to reciprocate.

Preferably, the test component comprises a connecting switch and an observer, wherein the observer is fixedly arranged on the movable clamping plate, the connecting switch is clamped on the movable clamping plate, and a clamping groove for placing the connecting switch is formed in the movable clamping plate.

In summary, the present application includes at least one of the following beneficial technical effects:

1. according to the invention, the fixed clamping plate, the movable clamping plate and the clamping slide rod are arranged above the fixed plate, and the distances between the fixed clamping plate and the movable clamping plate and the distances between the clamping slide rods are adjusted to adapt to circuit boards with different sizes, so that the circuit boards with different sizes are clamped, and the applicability of the testing device is improved.

2. According to the invention, the first synchronous wheel, the second synchronous wheel, the vibration belt and the vibration cam are arranged on the connecting rod, so that the circuit board is observed, and the circuit board is vibrated by rotating the vibration cam in the rotating process of the circuit board, so that whether components with unstable welding fall off is judged.

3. According to the invention, the brushing plate is driven to reciprocate by the reciprocating mechanism through arranging the plurality of groups of brushing needles on the brushing plate at equal intervals, so that the brushing circuit board is scraped by each brushing needle, and whether components which are not firmly welded are loose or fall down is observed.

Drawings

The invention will be further described with reference to the drawings and examples.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of a part of the structure of the present invention.

Fig. 3 is a schematic structural view of the circuit board of the present invention.

Fig. 4 is a schematic structural view of the test part of the present invention.

Fig. 5 is a schematic structural view of the brushing mechanism of the present invention.

Fig. 6 is a schematic diagram of the structure of fig. 5 a according to the present invention.

Fig. 7 is a schematic structural view of the vibration mechanism of the present invention.

FIG. 8 is a schematic diagram of the structure of the testing mechanism of the present invention.

Fig. 9 is a schematic diagram of the structure of the present invention at B in fig. 8.

In the figure, 1, a fixing plate; 2. a mounting plate; 3. moving the screw; 4. a first motor; 5. a screw seat; 6. a connecting rod; 7. a clamping mechanism; 8. a vibration mechanism; 9. a fixing frame; 10. a brushing mechanism; 11. a reciprocating mechanism; 12. a reciprocating synchronizing wheel; 13. a reciprocating belt; 14. a testing mechanism; 15. a test component; 16. a circuit board; 70. a second motor; 71. fixing the clamping plate; 72. moving the clamping plate; 73. clamping the slide bar; 74. shaped clamp blocks; 75. an adjusting member; 750. a first threaded rod; 751. a fixed block; 752. a second threaded rod; 753. clamping the synchronous wheel; 754. clamping the belt; 80. a vibration plate; 81. a vibration shaft; 82. a vibrating cam; 83. a first synchronizing wheel; 84. a second synchronizing wheel; 85. vibrating the belt; 100. -shaped fixing plates; 101. a wiper plate; 102. a telescoping spring rod; 103. scraping and brushing the needle; 110. a fixed cylinder; 111. a rotating lever; 112. a U-shaped frame; 113. a limit column; 140. scraping a brush strip; 141. a driving part; 160. a driving plate; 161. a drive gear; 162. a drive shaft; 163. a drive rack; 164. a driving groove; 165. a sliding groove; 150. a connection switch; 151. an observer.

Detailed Description

Embodiments of the invention are described in detail below with reference to fig. 1-9, but the invention can be implemented in a number of different ways, which are defined and covered by the claims.

The embodiment of the application discloses a high-density circuit board detection device, which is mainly applied to the process of detecting the circuit board 16, and can be used for solving the problems that when the capacitance and the electromagnetic quantity of the circuit board 16 are detected, only the same circuit board 16 is detected, and different dies are required to be used for clamping for detecting different circuit boards 16, so that the operation complexity is increased; furthermore, the high-density circuit board 16 detection device can also effectively avoid the problem that whether the parts on the circuit board 16 are firmly welded cannot be comprehensively confirmed due to the fact that the circuit board 16 is inspected by using a static observation method.

Embodiment one:

referring to fig. 1, a high density circuit board detection device, including fixed plate 1, fixed mounting panel 2 that is equipped with on the fixed plate 1, and the mounting panel 2 sets up along the length direction symmetry of fixed plate 1, install the removal screw rod 3 jointly between two mounting panels 2, fixedly connected with first motor 4 on the removal screw rod 3, first motor 4 is fixed to be established on the mounting panel 2 of one side through the motor cabinet, threaded connection has screw thread seat 5 on the removal screw rod 3, and screw thread seat 5 one end slides and locates on the fixed plate 1, first motor 4 work drives screw thread seat 5 and moves on the fixed plate 1, install connecting rod 6 on the screw thread seat 5, fixed mounting has fixture 7 and vibration mechanism 8 on the connecting rod 6, fixture 7's effect is to all can carry out the centre gripping to the circuit board 16 of equidimension, vibration mechanism 8 is in order to beat vibrations to circuit board 16 through vibration mechanism 8 in the test process, thereby judge whether have the infirm components and parts of welding so that drop, fixed plate 1 one end fixed mounting has mount 9, 9 upper sliding mounting has brush material mechanism 10, thereby brush material mechanism 10 is scraped to the reciprocal material mechanism 10 and the reciprocal material mechanism is not firmly is firmly dropped in order to observe, thereby the reciprocal material brushing mechanism 10 is not to be equipped with reciprocal material mechanism 11.

Referring to fig. 1 and 2, schematic diagrams of clamping a circuit board 16; specifically, the clamping mechanism 7 includes a second motor 70, a fixed clamping plate 71, a movable clamping plate 72, clamping slide bars 73, -shaped clamping blocks 74, and an adjusting member 75; the second motor 70 is fixedly arranged on the thread seat 5, an output shaft of the second motor 70 is fixedly connected with the connecting rod 6, the connecting rod 6 is driven to rotate on the thread seat 5 by the second motor 70, the fixed clamping plate 71 is fixedly arranged at one end of the connecting rod 6 far away from the second motor 70, the clamping slide rods 73 are slidably arranged on the fixed clamping plate 71 along two sides of the length direction of the fixed clamping plate 71, through grooves for the sliding of the clamping slide rods 73 are formed in the fixed clamping plate 71, -shaped clamping blocks 74 are fixedly arranged in the middle of the clamping slide rods 73, the circuit board 16 is clamped and fixed by being matched with the -shaped clamping blocks 74, insulating rubber blocks are arranged inside the -shaped clamping blocks 74, damage to the circuit board 16 due to excessive acting force in the clamping process is prevented, the movable clamping plate 72 is arranged at one end of the two clamping slide rods 73 far away from the fixed clamping plate 71, and through grooves for the sliding of the clamping slide rods 73 are formed in the movable clamping plate 72.

The adjusting part 75 is arranged on the movable clamping plate 72, and the distance between the fixed clamping plate 71 and the movable clamping plate 72 is adjusted through the adjusting part 75, so that the distance between the two clamping slide bars 73 is adjusted, and the purpose of adapting to circuit boards 16 with different sizes is achieved.

In the specific implementation process, when the circuit board 16 needs to be tested, the movable clamping plate 72 is taken out, the circuit board 16 is placed into the clamping block 74, then the movable clamping plate 72 is slidably placed on the clamping slide rod 73 to fix the circuit board 16, after the fixing is completed, the second motor 70 starts to work to drive the circuit board 16 fixed on the connecting rod 6 to rotate, and whether the components on the circuit board 16 are unstable in welding or not is tested, so that the components fall down.

With reference to fig. 2 and 3, a schematic view of the adjustment of the clamping mechanism 7 according to the size of the circuit board 16 is shown; specifically, the adjusting member 75 includes a first threaded rod 750, a fixing block 751, a second threaded rod 752, a clamping synchronizing wheel 753, and a clamping belt 754; the first threaded rod 750 is installed on the fixed clamping plate 71 through the support rotation, the fixed block 751 is on the first threaded rod 750 along the bilateral symmetry threaded connection of first threaded rod 750 length direction, and the bottom and the clamping slide bar 73 fixed connection of fixed block 751, wherein, first threaded rod 750 is two-way threaded rod, through rotating first threaded rod 750, can drive the fixed block 751 on the threaded rod and be close to each other and keep away from, thereby order about clamping slide bar 73 to be close to each other and keep away from through fixed block 751, and circuit board 16 is in the position at first threaded rod 750 middle part throughout this process, the symmetry of second threaded rod 752 sets up between fixed clamping plate 71 and removal clamping plate 72, and the one end and the fixed clamping plate 71 of second threaded rod 752 are connected through the bearing rotation, clamping synchronizing wheel 753 fixed mounting is kept away from the one end of removal clamping plate 72 at second threaded rod 752, and clamping synchronizing wheel 753 rotates to locate on the fixed clamping plate 71, clamping belt cover is established on clamping synchronizing wheel 753, through clamping synchronizing wheel 753 and clamping belt's cooperation, when rotating one of them second threaded rod 752, drive the second threaded rod 754 and the second threaded rod's of synchronous plate 752, and the circuit board of the second threaded rod 752 is further connected with the fixed clamping plate 754 of the circuit board of the big and the small distance of moving screw plate 72.

In the specific implementation process, the second threaded rod 752 is rotated to take down the movable clamping plate 72, after the circuit board 16 is placed on the -shaped clamping blocks 74, the first threaded rod 750 is rotated to adjust the distance between the two -shaped clamping blocks 74 to be matched with the circuit board 16, then the movable clamping plate 72 is sleeved on the clamping slide rod 73, the second threaded rod 752 is continuously rotated, and the movable clamping plate 72 is adjusted to be matched with the circuit board 16.

Referring back to fig. 2, 3 and 4, schematic diagrams of testing a circuit board are shown; specifically, the movable clamping plate 72 is further provided with a test component 15 for detecting the circuit board 16 in real time in an electrified state, the test component 15 comprises a connection switch 150 and an observer 151, the observer 151 is fixedly installed on the movable clamping plate 72, the connection switch 150 is clamped on the movable clamping plate 72, and the movable clamping plate 72 is provided with a clamping groove for placing the connection switch 150. It should be noted that the connection switch 150 may be replaced according to different circuit boards 16, so as to adapt to the test requirements of different circuit boards 16.

In the implementation process, when the movable clamping plate 72 is inserted into the clamping slide bar 73, the connection switch 150 on the movable clamping plate 72 is matched with the plug interface on the circuit board 16, the observer 151 is communicated with the circuit board 16 through the connection switch 150, and capacitance monitoring is performed on the circuit board 16 in the scraping process.

Referring to fig. 3 and 5, schematic structural views of a scraping brush for components on a circuit board are shown; the specific brushing mechanism 10 comprises a -shaped fixing plate 100, a scraping brush plate 101, a telescopic spring rod 102 and a scraping brush needle 103; -shaped fixing plate 100 is slidably arranged on fixing frame 9, scraping brush plates 101 are symmetrically arranged in -shaped fixing plate 100 in parallel, telescopic spring rods 102 are fixedly arranged between scraping brush plates 101 and -shaped fixing plate 100, one ends of the telescopic spring rods 102 are fixedly connected with scraping brush plates 101, the other ends of the telescopic spring rods are fixedly connected with -shaped fixing plate 100, and a plurality of groups of scraping brush needles 103 are arranged on scraping brush plates 101 at equal intervals.

The telescopic spring rod 102 has the function of reserving a certain movable space when the scraping needle 103 on the scraping plate 101 touches the components on the circuit board 16, so that the components are prevented from being damaged due to the movement of the scraping needle 103.

In the specific implementation process, the first motor 4 works to drive the movable screw 3 to rotate, then the thread seat 5 drives the circuit board 16 clamped by the clamping mechanism 7 to be far away from the two scraping brush plates 101, at the moment, the reciprocating mechanism 11 drives the scraping brush needles 103 on the scraping brush plates 101 to reciprocate, and the hanging brush carries out reciprocating scraping brushing on electronic components welded on two sides of the circuit board 16, so that the stability of welding between the electronic components and the circuit board 16 is detected.

Turning to fig. 5 and 6, a schematic structural diagram of the brushing mechanism 10 is shown; specifically, the reciprocating mechanism 11 includes a fixed cylinder 110, a rotating rod 111, a U-shaped frame 112, and a stopper post 113; the fixed cylinder 110 is installed at the top of the fixed frame 9 and is horizontally arranged, the rotating rod 111 is arranged inside the fixed cylinder 110 and is rotatably installed on the fixed frame 9, the U-shaped frame 112 is slidably arranged in the fixed cylinder 110 and abuts against the rotating rod 111, the limit posts 113 are symmetrically and fixedly installed on the inner wall of the U-shaped frame 112, the limit posts 113 are slidably arranged on the rotating rod 111, and a special-shaped groove for the limit posts 113 to be slidably matched is formed in the rotating rod 111. The rotation of the rotation rod 111 drives the limit posts 113 on the U-shaped frame 112 to slide in the special-shaped grooves, so that the U-shaped frame 112 slides in the fixed cylinder 110, and further drives the -shaped fixed plate 100 fixedly connected with the U-shaped frame 112 to reciprocate.

The end of the rotating rod 111 far away from the U-shaped frame 112 and the output shaft of the first motor 4 are fixedly provided with reciprocating synchronous wheels 12, the two reciprocating synchronous wheels 12 are sleeved with a reciprocating belt 13, and the first motor 4 drives the rotating rod 111 to rotate through the cooperation of the reciprocating synchronous wheels 12 and the reciprocating belt 13.

In the specific implementation process, the first motor 4 works, the reciprocating synchronous wheel 12 on the first motor 4 drives the reciprocating synchronous wheel 12 on the fixing frame 9 to rotate, so that the rotating rod 111 rotates, and then the limit post 113 on the U-shaped frame 112 slides in the special-shaped groove on the rotating rod 111, the U-shaped frame 112 is driven to slide in the fixing cylinder 110, and the U-shaped frame 112 slides to drive the -shaped fixing plate 100 to reciprocate on the fixing frame 9.

Referring back to fig. 1 and 7, a schematic diagram of a structure for detecting vibration of the circuit board 16 is shown; specifically, the vibration mechanism 8 includes a vibration plate 80, a vibration shaft 81, a vibration cam 82, a first synchronizing wheel 83, a second synchronizing wheel 84, and a vibration belt 85.

Vibration board 80 fixed mounting is on connecting rod 6, and vibration axle 81 rotates the one end of connecting rod 6 is kept away from at vibration board 80, and vibration cam 82 fixed mounting is kept away from the one end of vibration board 80 at vibration axle 81, and first synchronizing wheel 83 is fixed on connecting rod 6, and second synchronizing wheel 84 is fixed on vibration axle 81, and vibration belt 85 cover is established on first synchronizing wheel 83 and second synchronizing wheel 84, rotates through first synchronizing wheel 83 and drives second synchronizing wheel 84 and rotate, and then drives vibration axle 81 and drive vibration cam 82 and rotate.

The diameter of the second synchronizing wheel 84 is smaller than that of the first synchronizing wheel 83 in order that the second synchronizing wheel 84 can rotate while revolving around the first synchronizing wheel 83 because the diameter of the first synchronizing wheel 83 is larger than that of the second synchronizing wheel 84 when the first synchronizing wheel 83 follows the connecting rod 6.

In the specific implementation process, the first motor 4 works to move the circuit board 16 on the screw seat 5 to a position far away from the scraping brush plate 101, the second motor 70 works to drive the connecting rod 6 to rotate, so as to drive the first synchronous wheel 83 and the vibration plate 80 to synchronously rotate, at this time, under the cooperation of the vibration belt 85, the second synchronous wheel 84 revolves around the first synchronous wheel 83 and rotates at the same time to drive the vibration shaft 81 to rotate, so as to drive the vibration cam 82 to rotate, and the knocking of the vibration cam 82 on the circuit board 16 is realized, so that the electrifying stability of the whole circuit board 16 and the physical stability of electronic components on the circuit board 16 are detected under the condition of jolting the circuit board 16.

Embodiment two:

on the basis of the first embodiment, in order to further improve the completeness of the test on the circuit board 16, the embodiment also provides test mechanisms 14 with different structures and capable of detecting the cold joint of the circuit board 16, and the contact area between the test mechanisms 14 and the circuit board 16 is increased through different scraping and brushing modes, so that the test accuracy is improved.

Turning to fig. 3, 8 and 9, schematic illustrations of the circuit board 16 being scraped differently; specifically, the test mechanism 14 includes a wiper strip 140 and a drive member 141; the scraping brush strips 140 are distributed on the scraping brush plate 101 in an equidistant sliding manner, the driving part 141 is arranged on the scraping brush plate 101, and the driving part 141 drives the scraping brush strips 140 to reciprocate to perform virtual welding detection on the circuit board 16, and the scraping brush strips 140 are different from the scraping brush needles 103 in shape, so that the scraping brush needles 103 are prevented from being hooked on components on the circuit board 16 due to bending of one ends of the scraping brush needles 103 during reciprocation, and damage to the components is prevented.

The driving part 141 includes a driving plate 160, a driving gear 161, a driving shaft 162, and a driving rack 163; the driving plate 160 is symmetrically and fixedly arranged at two ends of the scraping brush plate 101 along the width direction of the -shaped fixing plate 100, a plurality of driving gears 161 are rotatably arranged on the driving plate 160 in a linear array manner, the driving shafts 162 are rotatably arranged between the driving plates 160 and fixedly connected with the driving gears 161, one ends of the scraping brush strips 140 are slidably connected to the driving shafts 162 through the rotation of the driving gears 161, driving grooves 164 for sliding the scraping brush strips 140 are formed in the driving shafts 162, sliding grooves 165 for sliding the scraping brush strips 140 are formed in the scraping brush plate 101, when the driving shafts 162 rotate, the scraping brush strips 140 slide in the driving grooves 164 in the driving shafts 162, further, the scraping brush strips 140 are driven to reciprocate along the sliding grooves 165, the driving racks 163 are fixedly arranged on the fixing frame 9, and the driving racks 163 are meshed with the driving gears 161.

In the specific implementation process, when the -shaped fixing plate 100 slides on the fixing frame 9, the driving gear 161 rotates on the driving plate 160 through the driving rack 163, and when the scraping brush plate 101 is close to the fixing frame 9, the driving gear 161 rotates anticlockwise, when the scraping brush plate 101 is far away from the fixing frame 9, the driving gear 161 rotates clockwise, so as to drive the driving shaft 162 to rotate bidirectionally, and then the driving groove 164 on the driving shaft 162 drives the scraping brush bar 140 to slide in the sliding groove 165, and further, the scraping brush bar 140 slides in the scraping brush plate 101 while moving along with the -shaped fixing plate 100, so as to scrape the circuit board 16.

When in operation, the device comprises: in the first step, the second threaded rod 752 is rotated to remove the movable clamping plate 72, the circuit board 16 is placed between the two -shaped clamping blocks 74, then the movable clamping plate 72 is inserted onto the clamping slide bar 73, then the second threaded rod 752 is rotated to adjust the position of the movable clamping plate 72 according to the circuit board 16, and simultaneously, the connection switch 150 on the movable clamping plate 72 is contacted with the plug interface on the circuit board 16, so that the connection observer 151 performs real-time observation.

And a second step of: the first motor 4 starts to work, the screw seat 5 moves to drive the circuit board 16 to move away from the direction of the scraping brush plate 101, meanwhile, the synchronous wheel on the first motor 4 rotates to drive the brushing mechanism 10 to reciprocate, scraping is performed on the circuit board 16 in the moving process of the circuit board 16, and whether components on the circuit board 16 loose or fall down due to the operation of the scraping brush needle 103 is tested.

And a third step of: the first motor 4 stops working, the second motor 70 works to drive the connecting rod 6 to rotate, the clamping mechanism 7 on the connecting rod 6 drives the circuit board 16 to rotate, meanwhile, the first synchronous wheel 83 on the connecting rod 6 drives the second synchronous wheel 84 to rotate, and then the vibration cam 82 is driven to rotate, the circuit board 16 is vibrated, and whether components and parts are unstable in welding and fall off is detected.

Fourth step: after the detection, the data on the observer 151 is observed for the circuit board 16 without loosening the components, and further capacitance detection is performed.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and accordingly, the embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The utility model provides a high density circuit board detection device, includes fixed plate (1), its characterized in that: the fixed plate (1) is fixedly provided with a mounting plate (2), the mounting plates (2) are symmetrically arranged along the length direction of the fixed plate (1), a movable screw (3) is fixedly installed between the two mounting plates (2) in a rotating mode, a first motor (4) is fixedly connected to the movable screw (3), the first motor (4) is fixedly arranged on the mounting plate (2) on one side through a motor base, a threaded seat (5) is connected to the movable screw (3) in a threaded mode, one end of the threaded seat (5) is slidably arranged on the fixed plate (1), a connecting rod (6) is rotatably installed on the threaded seat (5), a clamping mechanism (7) and a vibration mechanism (8) are fixedly installed on the connecting rod (6), a fixing frame (9) is fixedly installed at one end of the fixed plate (1), a brushing mechanism (10) is slidably installed on the fixing frame (9), and a reciprocating mechanism (11) for driving the brushing mechanism (10) to reciprocate is further arranged on the fixing frame (9).

The clamping mechanism (7) comprises a second motor (70), a fixed clamping plate (71), a movable clamping plate (72), a clamping slide rod (73), a -shaped clamping block (74) and an adjusting part (75); the second motor (70) is fixedly arranged on the threaded seat (5), an output shaft of the second motor (70) is fixedly connected with the connecting rod (6), the fixed clamping plate (71) is fixedly arranged at one end of the connecting rod (6) far away from the second motor (70), the clamping sliding rods (73) are slidably arranged on the fixed clamping plate (71) along two sides of the length direction of the fixed clamping plate (71), through grooves for the sliding of the clamping sliding rods (73) are formed in the fixed clamping plate (71), -shaped clamping blocks (74) are fixedly arranged in the middle of the clamping sliding rods (73), the movable clamping plate (72) is arranged at one end of the two clamping sliding rods (73) far away from the fixed clamping plate (71), and through grooves for the sliding of the clamping sliding rods (73) are also formed in the movable clamping plate (72); the adjusting part (75) is arranged on the movable clamping plate (72);

the brushing mechanism (10) comprises a -shaped fixing plate (100), a scraping brush plate (101), a telescopic spring rod (102) and a scraping brush needle (103); the novel brush holder is characterized in that the -shaped fixing plate (100) is arranged on the fixing frame (9) in a sliding mode, the brush scraping plates (101) are symmetrically arranged in the -shaped fixing plate (100) in parallel, the telescopic spring rods (102) are fixedly arranged between the brush scraping plates (101) and the -shaped fixing plate (100), one ends of the telescopic spring rods (102) are fixedly connected with the brush scraping plates (101), the other ends of the telescopic spring rods are fixedly connected with the -shaped fixing plate (100), and a plurality of groups of brush scraping needles (103) are arranged on the brush scraping plates (101) at equal intervals;

the fixing frame (9) is also provided with a testing mechanism (14) capable of detecting the cold joint of the circuit board (16), and the testing mechanism (14) comprises a scraping strip (140) and a driving part (141); the scraping brush strips (140) are distributed on the scraping brush plate (101) in an equidistant sliding mode, the driving part (141) is arranged on the scraping brush plate (101), and the driving part (141) drives the scraping brush strips (140) to reciprocate to perform virtual welding detection on the circuit board (16);

the driving part (141) comprises a driving plate (160), a driving gear (161), a driving shaft (162) and a driving rack (163); the driving plates (160) are symmetrically and fixedly arranged at two ends of the scraping brush plate (101) along the width direction of the -shaped fixing plate (100), a plurality of driving gears (161) are rotatably arranged on the driving plates (160) in a linear array manner, driving shafts (162) are rotatably arranged between the driving plates (160) and are fixedly connected with the driving gears (161), one ends of the scraping brush strips (140) are slidably connected onto the driving shafts (162), driving grooves (164) for sliding the scraping brush strips (140) are formed in the driving shafts (162), sliding grooves (165) for sliding the scraping brush strips (140) are formed in the scraping brush plate (101), the driving racks (163) are fixedly arranged on the fixing frames (9), and the driving racks (163) are meshed with the driving gears (161);

the vibration mechanism (8) comprises a vibration plate (80), a vibration shaft (81), a vibration cam (82), a first synchronous wheel (83), a second synchronous wheel (84) and a vibration belt (85); the vibration plate (80) is fixedly arranged on the connecting rod (6), the vibration shaft (81) is rotationally connected to one end, far away from the connecting rod (6), of the vibration plate (80), the vibration cam (82) is fixedly arranged at one end, far away from the vibration plate (80), of the vibration shaft (81), the first synchronous wheel (83) is fixed on the connecting rod (6), the second synchronous wheel (84) is fixed on the vibration shaft (81), and the vibration belt (85) is sleeved on the first synchronous wheel (83) and the second synchronous wheel (84); the diameter of the second synchronizing wheel (84) is smaller than the diameter of the first synchronizing wheel (83);

the reciprocating mechanism (11) comprises a fixed cylinder (110), a rotating rod (111), a U-shaped frame (112) and a limit column (113); the U-shaped frame (112) is slidably arranged in the fixed cylinder (110) and abuts against the rotating rod (111), the limiting columns (113) are symmetrically and fixedly arranged on the inner wall of the U-shaped frame (112), the limiting columns (113) are slidably arranged on the rotating rod (111), and the rotating rod (111) is provided with a special-shaped groove for the sliding fit of the limiting columns (113);

one end of the rotating rod (111) far away from the U-shaped frame (112) and the output shaft of the first motor (4) are fixedly provided with reciprocating synchronous wheels (12), and the two reciprocating synchronous wheels (12) are sleeved with a reciprocating belt (13) together.

2. The high-density circuit board inspection device according to claim 1, wherein: the adjusting part (75) comprises a first threaded rod (750), a fixing block (751), a second threaded rod (752), a clamping synchronous wheel (753) and a clamping belt (754); the utility model discloses a clamping device, including fixed grip block (71), fixed block (751) are installed on fixed grip block (71) through the support rotation, fixed block (751) are installed on fixed grip block (71) through support rotation, fixed block (751) are installed on fixed grip block (71) and remove grip block (72) through support rotation, fixed block (751) are installed on first threaded rod (750) along the bilateral symmetry threaded connection of first threaded rod (750) length direction, just bottom and centre gripping slide bar (73) fixed connection of fixed block (751), second threaded rod (752) symmetry sets up between fixed grip block (71) and removal grip block (72), and one end and fixed grip block (71) of second threaded rod (752) are passed through the bearing rotation with other end and are connected, one end of keeping away from removal grip block (72) is located in centre gripping synchronizing wheel (753) rotation, centre gripping belt (754) cover is established on centre gripping synchronizing wheel (753).

3. The high-density circuit board inspection device according to claim 1, wherein: the mobile clamping plate (72) is further provided with a test component (15) for detecting the circuit board (16) in real time under the electrified state, the test component (15) comprises a connecting switch (150) and an observer (151), the observer (151) is fixedly installed on the mobile clamping plate (72), the connecting switch (150) is clamped on the mobile clamping plate (72), and the mobile clamping plate (72) is provided with a clamping groove for placing the connecting switch (150).